[Intel-gfx] [PATCH 05/10] driver core: Export device_driver_attach()

[Greg Kroah-Hartman]

On Mon, Jun 14, 2021 at 05:08:41PM +0200, Christoph Hellwig wrote:
> From: Jason Gunthorpe <jgg at nvidia.com>
> 
> This is intended as a replacement API for device_bind_driver(). It has at
> least the following benefits:
> 
> - Internal locking. Few of the users of device_bind_driver() follow the
>   locking rules
> 
> - Calls device driver probe() internally. Notably this means that devm
>   support for probe works correctly as probe() error will call
>   devres_release_all()
> 
> - struct device_driver -> dev_groups is supported
> 
> - Simplified calling convention, no need to manually call probe().
> 
> The general usage is for situations that already know what driver to bind
> and need to ensure the bind is synchronized with other logic. Call
> device_driver_attach() after device_add().
> 
> If probe() returns a failure then this will be preserved up through to the
> error return of device_driver_attach().
> 
> Signed-off-by: Jason Gunthorpe <jgg at nvidia.com>
> Signed-off-by: Christoph Hellwig <hch at lst.de>

Reviewed-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>